Interview with Square-Enix's World Technological Director. Basically:
-Something "different" about Agni's Philosophy will be shown in June 2013 (E3?), on "something other than PC". Based on the guy's smile, it's clearly next-gen platforms.
-Lightning Returns: Development is quite advanced, they're currently showing it to focus groups to find out which element they should concentrate on to please fans. Also, he said that on a technological level, Versus XIII elements were used for this game. It will keep some elements from FFXIII/XIII-2 but will be quite different from every FF that's come out so far.